Alright, let's work through 6435 times 3880 step by step
6435 × 3880 = 3880 × (6435)
+ 3880 × 5 yielding 19400
+ 3880 × 30 that is equal 116400
+ 3880 × 400 resulting in 1552000
+ 3880 × 6000 that is equal 23280000

= 24967800
